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Find the gain for the following circuit.(a) -2(b) 2(c) -1(d) 1I had been asked this question in an interview for internship.The question is from Operational Amplifier Terminals,Terminal Voltages and Currents in division The Operational Amplifier of Electric Circuits

Answer»

Correct option is (a) -2

To explain: In this circuit, the only NODE is at the negative TERMINAL of the Op-amp (SAY Vn) and by ideal rules of Op-amp, Vn= VP =0(in this circuit).Gain= Vout/Vin= -R2/R1.



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